#include<stdio.h>

int main(int argc, char *argv[])
{
	int num1, num2;
	char operator;
	scanf("%d, %d, %c", &num1, &num2, &operator);
	switch(operator){
		case '+':
			printf("%d + %d = %d\n", num1, num2, num1+num2);
			break;
		case '-':
			printf("%d - %d = %d\n", num1, num2, num1-num2);
			break;
		case '*':
			printf("%d * %d = %d\n", num1, num2, num1*num2);
			break;
		case '/':
			printf("%d / %d = %d\n", num1, num2, num1/num2);
			break;
		default:
			printf("暂不支持此功能\n");
	}
	return 0;
}
